<?php
namespace Yurun\Util\YurunHttp\Http\Psr7\Consts;

/**
 * 常见的媒体类型
 */
abstract class MediaType
{
    const ALL = '*/*';

    const APPLICATION_ATOM_XML = 'application/atom+xml';

    const APPLICATION_FORM_URLENCODED = 'application/x-www-form-urlencoded';

    const APPLICATION_JSON = 'application/json';

    const APPLICATION_JSON_UTF8 = 'application/json;charset=UTF-8';

    const APPLICATION_OCTET_STREAM = 'application/octet-stream';

    const APPLICATION_PDF = 'application/pdf';

    const APPLICATION_PROBLEM_JSON = 'application/problem+json';

    const APPLICATION_PROBLEM_XML = 'application/problem+xml';
    
    const APPLICATION_RSS_XML = 'application/rss+xml';
    
    const APPLICATION_STREAM_JSON = 'application/stream+json';
    
    const APPLICATION_XHTML_XML = 'application/xhtml+xml';
    
    const APPLICATION_XML = 'application/xml';
    
    const IMAGE_JPEG = 'image/jpeg';
    
    const IMAGE_APNG = 'image/apng';
    
    const IMAGE_PNG = 'image/png';
    
    const IMAGE_GIF = 'image/gif';
    
    const IMAGE_WEBP = 'image/webp';
    
    const MULTIPART_FORM_DATA = 'multipart/form-data';
    
    const TEXT_EVENT_STREAM = 'text/event-stream';
    
    const TEXT_HTML = 'text/html';
    
    const TEXT_MARKDOWN = 'text/markdown';
    
    const TEXT_PLAIN = 'text/plain';
    
    const TEXT_XML = 'text/xml';

    private static $extMap = [
        'Type/sub-type'    => 'Extension',
        'text/h323'    => '323',
        'application/internet-property-stream'    => 'acx',
        'application/postscript'    => 'ai',
        'audio/x-aiff'    => 'aiff',
        'video/x-ms-asf'    => 'asf',
        'audio/basic'    => 'au',
        'video/x-msvideo'    => 'avi',
        'application/olescript'    => 'axs',
        'application/x-bcpio'    => 'bcpio',
        'image/bmp'    => 'bmp',
        'application/vnd.ms-pkiseccat'    => 'cat',
        'application/x-cdf'    => 'cdf',
        'application/x-msclip'    => 'clp',
        'image/x-cmx'    => 'cmx',
        'image/cis-cod'    => 'cod',
        'application/x-cpio'    => 'cpio',
        'application/x-mscardfile'    => 'crd',
        'application/pkix-crl'    => 'crl',
        'application/x-x509-ca-cert'    => 'crt',
        'application/x-csh'    => 'csh',
        'text/css'    => 'css',
        'application/x-msdownload'    => 'dll',
        'application/msword'    => 'doc',
        'application/vnd.openxmlformats-officedocument.wordprocessingml.document'   => 'docx',
        'application/vnd.openxmlformats-officedocument.wordprocessingml.template'   => 'dotx',
        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'xlsx',
        'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'pptx',
        'application/x-dvi'    => 'dvi',
        'application/x-director'    => 'dxr',
        'text/x-setext'    => 'etx',
        'application/envoy'    => 'evy',
        'application/fractals'    => 'fif',
        'image/gif'    => 'gif',
        'application/x-gtar'    => 'gtar',
        'application/x-gzip'    => 'gz',
        'application/x-hdf'    => 'hdf',
        'application/winhlp'    => 'hlp',
        'application/mac-binhex40'    => 'hqx',
        'application/hta'    => 'hta',
        'text/x-component'    => 'htc',
        'text/html'    => 'html',
        'text/webviewhtml'    => 'htt',
        'image/x-icon'    => 'ico',
        'image/ief'    => 'ief',
        'application/x-iphone'    => 'iii',
        'image/pipeg'    => 'jfif',
        'image/jpeg'    => 'jpg',
        'application/x-javascript'    => 'js',
        'application/x-latex'    => 'latex',
        'video/x-la-asf'    => 'lsf',
        'audio/x-mpegurl'    => 'm3u',
        'application/x-troff-man'    => 'man',
        'application/x-msaccess'    => 'mdb',
        'application/x-troff-me'    => 'me',
        'message/rfc822'    => 'mhtml',
        'audio/mid'    => 'mid',
        'application/x-msmoney'    => 'mny',
        'video/quicktime'    => 'mov',
        'video/x-sgi-movie'    => 'movie',
        'video/mpeg'    => 'mpeg',
        'application/vnd.ms-project'    => 'mpp',
        'application/x-troff-ms'    => 'ms',
        'application/x-msmediaview'    => 'mvb',
        'application/oda'    => 'oda',
        'application/pkcs10'    => 'p10',
        'application/x-pkcs7-mime'    => 'p7m',
        'application/x-pkcs7-certreqresp'    => 'p7r',
        'application/x-pkcs7-signature'    => 'p7s',
        'image/x-portable-bitmap'    => 'pbm',
        'application/pdf'    => 'pdf',
        'application/x-pkcs12'    => 'pfx',
        'image/x-portable-graymap'    => 'pgm',
        'application/ynd.ms-pkipko'    => 'pko',
        'image/x-portable-anymap'    => 'pnm',
        'image/x-portable-pixmap'    => 'ppm',
        'application/vnd.ms-powerpoint'    => 'ppt',
        'application/pics-rules'    => 'prf',
        'application/x-mspublisher'    => 'pub',
        'audio/x-pn-realaudio'    => 'ram',
        'image/x-cmu-raster'    => 'ras',
        'image/x-rgb'    => 'rgb',
        'application/rtf'    => 'rtf',
        'text/richtext'    => 'rtx',
        'application/x-msschedule'    => 'scd',
        'text/scriptlet'    => 'sct',
        'application/set-payment-initiation'    => 'setpay',
        'application/set-registration-initiation'    => 'setreg',
        'application/x-sh'    => 'sh',
        'application/x-shar'    => 'shar',
        'application/x-stuffit'    => 'sit',
        'application/x-pkcs7-certificates'    => 'spc',
        'application/futuresplash'    => 'spl',
        'application/x-wais-source'    => 'src',
        'application/vnd.ms-pkicertstore'    => 'sst',
        'application/vnd.ms-pkistl'    => 'stl',
        'image/svg+xml'    => 'svg',
        'application/x-sv4cpio'    => 'sv4cpio',
        'application/x-sv4crc'    => 'sv4crc',
        'application/x-shockwave-flash'    => 'swf',
        'application/x-tar'    => 'tar',
        'application/x-tcl'    => 'tcl',
        'application/x-tex'    => 'tex',
        'application/x-texinfo'    => 'texi',
        'application/x-compressed'    => 'tgz',
        'image/tiff'    => 'tiff',
        'application/x-msterminal'    => 'trm',
        'text/tab-separated-values'    => 'tsv',
        'text/plain'    => 'txt',
        'text/iuls'    => 'uls',
        'application/x-ustar'    => 'ustar',
        'text/x-vcard'    => 'vcf',
        'audio/x-wav'    => 'wav',
        'application/x-msmetafile'    => 'wmf',
        'application/x-mswrite'    => 'wri',
        'image/x-xbitmap'    => 'xbm',
        'application/vnd.ms-excel'    => 'xls',
        'image/x-xpixmap'    => 'xpm',
        'image/x-xwindowdump'    => 'xwd',
        'application/x-compress'    => 'z',
        'application/zip'    => 'zip',
        'application/vnd.android.package-archive'   => 'apk',
        'application/x-silverlight-app' => 'xap',
        'application/vnd.iphone' => 'ipa',
        'text/markdown' => 'md',
        'text/xml'  => 'xml',
        'image/webp'=> 'webp',
        'image/png' => 'png',
    ];

    /**
     * 获取 ContentType 对应的扩展名(不包含点)
     *
     * @param string $contentType
     * @return string
     */
    public static function getExt($contentType)
    {
        list($firstContentType) = explode(';', $contentType, 2);
        if(isset(static::$extMap[$firstContentType]))
        {
            return static::$extMap[$firstContentType];
        }
        else
        {
            return null;
        }
    }

}